A Test Claims to Measure Intelligence

A test claims to measure intelligence. How could you measure the reliability of the test?

A) Examine the content of the items to see whether it agrees with standard descriptions of intelligence.
B) Determine whether people who score high on the test are more likely than others to do well in school.
C) Determine whether the mean score and the range are about the same for various groups of people.
D) Give the test repeatedly and see whether each person's scores are consistent.